[Explanation of a color]

The Sumi-iro, it is a gray-black close to the black corresponding to focus of “five colors of ink.” Ink used on the document is what it is hardened by adding the batter fragrance glue in the soot of good quality that Deki burning pine and rapeseed oil. Staining, as well as use the ink, such as Biro-ko trees and horse chestnut, a variety of materials have been used by the era. Ink black was the color that represents the Kyoji color and clothes of ordinary monk from ancient times, but I continue to spread as decoration enters the modern.

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